/Engine/Source/Editor/UnrealEd/Public/Kismet2/KismetDebugUtilities.h
Get the trace stack.
static const [TSimpleRingBuffer](API\Runtime\Engine\Engine\TSimpleRingBuffer)< [FKismetTraceSample](API\Editor\UnrealEd\Kismet2\FKismetTraceSample) > & GetTraceStack()